Predictive sensor readout
AssigneeInfineon Technologies AG
InventorDirk Hammerschmidt
Life of this patent
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Abstract
A predictive sensor readout is suitable for coupling to a sensor. The predictive sensor readout includes a sampling circuit, a predictor, and a preset circuit. The sampling circuit is configured to receive and over-sample previously digitized samples of signals previously input from the sensor. The predictor is coupled to the sampling circuit and is configured to receive the over-sampled digitized samples into a signal history and to generate a predicted input from the sensor based on the signal history. The preset circuit is coupled to the predictor and the sampling circuit and is configured to present the sampling circuit to receive the predicted input from the sensor prior to sampling an actual input from the sensor.
Claims24
A predictive sensor readout comprising:
- a sampling circuit configured to receive and over-sample previously digitized samples of signal levels previously input from a sensor;
- a predictor coupled to the sampling circuit and configured to receive the over-sampled previously digitized samples into a signal history, and wherein the predictor is configured to apply the signal history to generate a predicted next input level representative of a signal level predicted to be input next from the sensor;
- and
- a preset circuit coupled to the predictor and the sampling circuit, and wherein the preset circuit is configured to preset the sampling circuit to the predicted next input level as generated by the predictor prior to sampling an actual next signal level input from the sensor.
A predictive sensor readout coupled to a plurality of sensors, the predictive sensor readout comprising:
- an analog to digital converter configured to receive a series of signals from a selected sensor of the plurality of sensors and to generate a digital output of a series of digital signals based on the input of the series of signals;
- and
- a feedback circuit coupled to the analog to digital converter and configured to receive the series of digital signals, wherein the feedback circuit includes:
- a predictor circuit coupled to the analog to digital converter, wherein the predictor circuit is configured to receive an over sampled input of the series of digital signals, and wherein the predictor circuit is configured to apply the series of digital signals to generate a digital predicted next signal representative of a particular signal predicted to be received next from the selected sensor;
- a digital to analog converter coupled to the predictor circuit, wherein the digital predicted next signal as generated by the predictor circuit is converted to an analog representation of the digital predicted next signal;
- and
- a sampling circuit coupled to the digital to analog converter and configured to be pre-charged with the analog representation of the digital predicted next signal, and
- wherein the sampling circuit it is configured to receive a next signal from the selected sensor after the sampling circuit is charged to the analog representation of the predicted next signal.
A method of preparing for a sensor output from a sensor into a sensor readout, the method comprising:
- receiving a series of samples representative of an output from the sensor through a sensor sampling circuit of the sensor readout, the sampling circuit pre-charged with a voltage;
- storing a series of previously digitized samples from the sensor in a predictor circuit of the sensor readout;
- predicting the sensor output from the series of previously digitized samples to obtain a predicted next output of the sensor with the predictor circuit of the sensor readout, the predictor circuit generating a predicted next input level representative of a signal level predicted to be output next from the sensor to the sensor sampling circuit;
- converting the predicted next output into an amount of voltage corresponding with the predicted next input level;
- and
- pre-charging the sensor sampling circuit with an estimated amount of voltage prior to sampling a next output from the sensor with the sensor readout.
A method of preparing for an input from a sensor with a sensor readout, the method comprising:
- receiving a series of sensor signals representative of an output from the sensor through a sensor sampling circuit sensor readout, the sampling circuit pre-charged with a voltage;
- oversampling the series of sensor signals to generate a digital signal history;
- generating, with a predictor circuit, a predicted next input level representative of a signal level predicted to be output next from the sensor to the sensor sampling circuit based on the digital signal history;
- and
- pre-charging the sensor sampling circuit with the predicted next input level generated with the predictor circuit.
Dependencies are inferred from the claim text.